Gartner Research

Benefits and Challenges of HCIS Stretched Clusters for Implementing HA and DR

Published: 14 November 2017

ID: G00336634

Analyst(s): Jerry Rozeman

Summary

Stretched hyperconverged clusters claim to create true active-active data center architectures for disaster recovery, disaster avoidance and load balancing in a single solution. Technical professionals can use this document to understand the benefits and limitations of stretched HCISs.

Table Of Contents

Analysis

  • What Is a "Typical" Stretched Cluster and Do You Need One?
    • Active/Active Data Center Load Balancing or Workload Migration
    • Disaster Recovery Automation
  • How an HCIS Stretched Cluster Differs From a Traditional Stretched Cluster
    • Connectivity
    • Replication for HCIS Systems
    • Building an HCIS Stretched Cluster
    • Data Placement and Data Redundancy
    • Availability of Fault Domains
    • A Third Site and a Witness Component
    • Cluster Size
    • Network Bandwidth and Latency
    • VMware vSphere
    • Support
  • Analyzing the Use Cases
    • Active/Active Load Balancing Within and Between Data Centers
    • Disaster Recovery
    • Disaster Avoidance
  • Other Challenges of HCIS Stretched Clustering
    • Limited Vendor Support
    • Impact on Supported Features
  • Strengths
  • Weaknesses

Guidance

The Details

  • Key Players
    • Dell EMC VxRail
    • HPE SimpliVity
    • Nutanix

Gartner Recommended Reading

©2020 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.

Already have a Gartner Account?

Become a client

Learn how to access this content as a Gartner client.